Circular shears



Nov. 22, 1932. STElN 1,888,870

CIRCULAR SHEARS Filed Oct. 16', 1931 Patented Nov. 22, 1932 STATES tilt!i T E i FRITZ STEIN, 0F BERLIN, GEBIKANY, ASSIGNOR OF ONE-HALF TOHEREIANN EBELING, 0F WILI-IELDIINENHOFSTEASSE, BERLIN-0333BCEIONEWEIDE,GERIVIANY CIRCULAR SHEARS Application filed October 16, 1931, Serial No.569,149, and in Germany (Ectober 17, 1930.

This invention relates to circular shears such as employed for thecutting of paste board or cardboard and employed by printcrs, boxmakers,etc.

The known machines of simple construction serve only for cutting thecardboard with introduction of the board to the knives or shears indirect fashion. in addition to these there is also a further type ofmachine, in which, beyond the mere cutting operation, provision is alsomade for simultaneously scoring and creasing the board. These, however,may be employed only for full size sheets or relatively wide strips,while in the case of narrow strips a proper guiding thereof is quiteimpossible owing to the excessive spacial disposal of the guide rollsand also the creasing and scoring rolls, which in part are subject toidle movement, so that a slanting cut will frequently result.

It is the object of the present invention to overcome the disadvantagesreferred to, and this is accomplished by the fact that the machineaccording to the invention is furnished with a displaceable table andwith scoring and creasing means which be removed from the path ofmovement of the said table. In this manner it is possible to perform allrequisite operations in perfectly faultless manner.

The invention is illustrated in sectional view in the accompanyingdrawing, in which Fig. 1 shows a machine on which any desired form ofcutting, scoring and creasing operation may be performed.

Fig. 2 shows a machine for cutting and scoring or creasing.

Fig. 3 shows a machine for cutting particularly narrow strips.

Owing to the fact that the table is displaceable and may be moved rightup to the feed rollers for the following operation, any intermediatespacing between the single pairs of feed rolls is accordinglyoverbridged, so that even the narrowest strip of board entering intopractical consideration will be guided in perfectly secure fashionwithout the addition of auxiliary means such as hand guides or the like.

The machine is adapted for performing the mounted with their operatingwheels in two three operations illustrated in the three figures in thefollowing manner:

Fig. 1 shows a machine having the shears or knives a and Z), thecreasing knife 0 with base roller (Z, the scoring knife 0 with baseroller the feed rolls g and h, i and 70, Z and m, and "n, and 0, thefeed table p, and the depositing table 2. The base roller 7 and theappertaining lower feed or guide roll it are so common slides 57, andmay be lifted or lowered simultaneously in the two frame portions bymeans of the cams 1 and a suitable hand lever, as readily disclosed bycomparison between Figs. 1 and 2. In Fig. 2 the upper scoring knife beamat together with the scoring knives e and their holders and the upperfeed or guide roll 9 have been removed, and the table 7) advanced as faras the feed rolls 2', is. With this adjustment of the machine operationsare performed merely with a creasing device, or as desired also with ascoring device. The sheets and strips, however, are in each case passedin direct fashion to the feed rolls a and 1 1;, and accordingly do notrequire to traverse the space between and 2' without means of support,so that the same maintain the position given to them upon introductioninto the machine.

In exactly the same manner it is also pos sible to lower the base rollercl and lower guide roll 70 together with the operating wheels by meansof the cams t and the hand lever, and to remove the knife beam y withthe creasing knives c and feed roll 2', so that the feed table may thenbe advanced up to the feed rolls for the actual cutting knives orshears, as shown in Fig. 3. In this adjustmentof the machine the sheetsor strips positioned on the table 39 are passed to the cutting knives orshears in direct fashion, ensuring an angular out.

In each of the three adjustments the machine is extremely simple tomanipulate, and offers in its combination the same facilities as threeseparate machines constructed for each single operation.

It will be understood that no restriction is made to the specific formof embodiment shown, and that various modifications are quite possibleWithin the meaning of the above description and the annexed claimsWithout departing from the spirit of the invention.

What I claim as neW and desire to secure by Letters Patent is 1. Acircular shears machine for creasing, scoring and cutting pasteboard,cardboard and the like, comprising in combination circular shears forthe cutting operation, feed rolls for the said shears, scoring means,feed rolls for the said scoring means, creasing means, feed rolls forthe said creasing means, and a displaceable feed table enabling thematerial to be fed in direct fashion to any of the said feed rolls asdesired.

2. A circular shears machine for creasing, scoring and cutting;pasteboard, cardboard and the like, comprising in combination cir--cular shears for the cutting operation, feed rolls for the said shears,removable scoring means, feed rolls for the said scoring means, creasingmeans, teed roils for the said creasing means, and a displ ceable feedtable enabling the material to be fed in direct fashion to any of thesaid teed rolls as desired 3. A circular shears machine for creasing,scoring and cutting pasteboard, cardboard and the like, comprising incombination circular shears for the cutting operation, teed rolls forthe said shears, scoring; means, feed rolls for the said scoring means,removable creasing means, teed rolls tor the said creasing means, and adisplaceabie teed table enabling the material to be fed in directfashion to any of the said iced rolls as desired.

4:. A circular shears machine for creasing, scoring and cuttingpasteboard, cardboard and the like, comprising in combination circularshears for the cutting operation, feed rolls for the said shears,removable scoring means, removable feed rolls for the said scoringmeans, removable creasing means, removable feed rolls for the saidcreasing means, and a displaceabl-e feed table, the arrange ment beingsuch that the said scoring means or said creasing means or both togetherwith the appertaining feed rolls may be removed from the path of t 1esaid table to permit of the table being advanced up to the next feedrolls remaining.

In testimony whereof I atlix my signature.

FRITZ STEEN.

